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Source-backed error-code guide

Reviewed

Bosch Dishwasher E23 Error Code

Bosch says E23 indicates an issue with the drain pump, which can happen when the drain pump is blocked, clogged, or faulty. Bosch directs owners to contact Customer Support.

Applies to Bosch dishwasher

What the appliance detected

Detected condition

The dishwasher reports an issue with the drain pump.

What may contribute

Possible causes

  • The drain pump may be blocked or clogged.
  • A drain-pump fault condition may be present.
  • The available Bosch homeowner guidance is service-directed.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the Bosch dishwasher display

    • Photograph or write down the exact code or flashing-light pattern before clearing it.
    • Confirm the full model number and owner manual because Bosch dishwasher codes vary by series and control platform.

  2. Use only documented homeowner checks

    • Record E23 and the full model number.
    • Avoid repeated resets or internal pump access.
    • Contact Bosch Customer Support or qualified service.

  3. Stop before internal dishwasher work

    • If the code remains or returns after documented checks, request Bosch support or qualified service.
    • Do not test live components, access control boards, bypass leak protection, or disassemble pumps or heaters beyond model-manual maintenance.

Actions not recommended

  • Do not reach into wet areas while the dishwasher has power.
  • Do not test live voltage or open internal electrical areas.
  • Do not treat an error code as proof that one specific internal component failed.

When to stop and request service

  • E23 is displayed.
  • The dishwasher is not draining or water remains inside.
  • Drain-pump, wiring, or control diagnosis would be required.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: August 18, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Bosch.

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